Not working on Ubuntu 20.04

[prabh1601]

It was working fine till 6 hours ago, till suddenly it just stopped working. And now if I try to install this from gnome page error, I get a error. Can you please look into the matter.

I tried to install it for the first time in Ubuntu 20.04 and there is no error but nothing displays. I can't see any timer. Can you fix this please.